With TEH, worked on the ePub project. She's building a test file to see what will work and what won't from our current files. I've added automated download/update of the epubcheck jar file to our static build process, and tested that. I can't yet see a way to pass a batch of files to epubcheck, so it may be the usual one-at-a-time process, but with luck it shouldn't be that onerous because (I think) ant will allow us to avoid instantiating a new vm every time.